Safety emery or corundum wheel



(No Model.)

W. S. SHIPE. SAFETY EMERY 0R GORUNDUM WHEEL.

Palen'e;L Nov. 14, 1893.

llNiTnn STATES PATENT @Trina i WALTER sO'OTT' sHIPE, OF BROOKLYN, NEW YORK.

VSAFETY EMI-:RY OR CORUNDUM WHEEL. I

SPECIFICATION forming part of Letters Patent No. 508,773, dated November 14, 41893.

Applicationiiled December 28, 1892- Serial No. 456,141. (No model.)

To all whom t may concern-.-

Be it known that I, WALTER SCOTT SHURE, acitizen ofthe United States, residing at No. 18 Jeerson street, in the city of Brooklyn, county of Kings, and State-of New York, have invented certain new and usefullmprovements in Safety Emery or Corundum Wheels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification. Y

This invention relates to emery or corundum wheels for grinding and particularly to that class of wheels having a cup shape, and

.adapted to end grinding.

The object of my invention is to provide an improved and eifective means for making and strengthening emery or corundum wheels.

In carrying out my invention, I provide a disk or face-plate containinganchoring recesses and holes to retain emery or corundum composition which is molded to the forin of a hollow cylinder; and the outer edge of which cylinder is protected by sectionalrings of metal, such` protection permitting revolution at a very high rate of speed without danger of bursting from centrifugal force.

I will first describe my improved emery or corundum wheel with reference to the accompanying drawings, and then define the matter constituting my invention in theclaims.`

In the accompanying drawings, Figure'fl represents a vertical section of the wheel and arbor, as made upon the line x-y of Figs. 2 and 3. Fig. 2 represents the rear elevation or end view. Fig. 3 represents the frontv elevation or end view.

In the different figures the same letters refer always to the same parts.

A represents the metal disk or Aface-plate, which turns or revolveswith the vcommon arl' bor C to which it is bound or clamped by a conical collar D, and binding screw-nut E. The disk or face-plate A is providedin'its center with a conical hole the sides of which are at an angle of about sixty degrees with the face of the plate, and has upon the surface in which the said hole is largest a recess F Haring or widening in its interior; such iiaring or widening being preferably curved instead of angular. At certain distances around vthis recess, holes G; are continued through the disk or face-plate'A and are countersunk'froni the opposite side. The object of the continuous recess F and the countersunk v holes G, is to contain the emery or corundum its cylindrical forni on and in the disk or faceplate A and within the sectional strengthening bands or rings are seen in section in Fig.

1, each presenting the forni of a rhomb o r rhomboid, the outer and inner surfaces being independently inclined toward the axis of the 'wheel the advantage of which latter form is two-fold, both anchoring the rings in the composition emery wheel B, and affording a shoulder by which the outside ring may be driven off when the composition emery wheel B is worn down to it, which stripping off aords a new grinding space.

The conical collar D is made of such shape as to lit snugly the conical hole before nientioned as being in the disk or face-plate -A, and contains a hole fitting closely the arbor C,- and is firmly pressed into the conical hole of the said'disk or face-plate A by means of screw-nut E, thus binding the device to the arbor firmly, and centering it correctly, land retaining such center.

4When the emery or corundum grinding wheel has become worn-out and useless, as before mentioned, the remnants may be forced from the disk or face plate by means of vpunches through the countersunk holes G;

`then placing the rings z', i, z', &c., uponth'e disk orfaceplate, a new emery or corundum composition wheel may be cast therein, thus providing a new and perfect wheel.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, isl l.V In a safety emery or corundum Wheel,

sectional reinforcing or strengthening bands or rings; such rings, when placed side by side, presenting serrated surfaces, substantially as and for the purposes described.

2. In safety emery or corundum wheels, a metallic disk or face-plate through which are pierced a series of holes that are countersunk from the side of said plate opposite to its face,

' in combination with the composition emery Wheel cast upon the face of said plate, substantially as described.

3. In a safety emery` or corundum wheel, the combination of a disk or face-plate having upon its face a continuous annular recess and a series of countersunk holes, agrinding wheel or cylinder composed of einery or other grinding material and cast upon lthe said disk Witnesses:

EDWARD C. BOWLING, WM. H. BURGOYNE. 

